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.\" Copyright (C) 2000 Jason Evans <jasone@FreeBSD.org>.
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.\" $FreeBSD: src/lib/libc_r/man/pthread_kill.3,v 1.8 2001/10/01 16:09:09 ru Exp $
.Dd Feb 05, 2002
.Dt PTHREAD_KILL 2
.Os
.Sh NAME
.Nm pthread_kill
.Nd send a signal to a specified thread
.Sh SYNOPSIS
.In signal.h
.Ft int
.Fn pthread_kill "pthread_t thread" "int sig"
.Sh DESCRIPTION
The
.Fn pthread_kill
function sends a signal, specified by
.Fa sig ,
to a thread, specified by
.Fa thread .
If
.Fa sig
is 0, error checking is performed, but no signal is actually sent.
.Sh RETURN VALUES
If successful,
.Fn pthread_kill
returns 0.
Otherwise, an error number is returned.
.Sh ERRORS
The
.Fn pthread_kill
function will fail if:
.Bl -tag -width Er
.It Bq Er ESRCH
.Fa thread
is an invalid thread ID.
.It Bq Er EINVAL
.Fa sig
is an invalid or unsupported signal number.
.It Bq Er ENOTSUP
.Fa thread
was not created by
.Fn pthread_create
and does not support being killed with
.Fn pthread_kill
.El
.Sh LEGACY SYNOPSIS
.Fd #include <pthread.h>
.Fd #include <signal.h>
.Pp
The include file
.In pthread.h
is necessary.
.Sh SEE ALSO
.Xr kill 2 ,
.Xr pthread_self 3 ,
.Xr raise 3 ,
.Xr compat 5
.Sh STANDARDS
.Fn pthread_kill
conforms to ISO/IEC 9945-1:1996 (``POSIX.1'')
